Carbfix

Carbfix dissolves captured CO2 in water and injects it into basalt rock formations, where it permanently mineralises into solid carbonate stone in under two years. Founded in 2007 as a joint research initiative by Reykjavik Energy, the University of Iceland, CNRS France, and Columbia University's Earth Institute, the company operates at the Hellisheiði geothermal power plant. In 2023 it secured a $117M EU grant and became the first company to receive an EU permit for onshore carbon capture & storage, with capacity for ~106,000 tonnes of CO2 per year. It was a WIPO Global Awards 2025 finalist and partners with Climeworks on the Mammoth DAC plant.